Examining the impacts of elevated, variable pCO2 on larval Pacific razor clams (Siliqua patula) in Alaska
An increase in anthropogenic carbon dioxide is driving oceanic chemical shifts resulting in a long-term global decrease in ocean pH, colloquially termed ocean acidification (OA). Previous studies have demonstrated that OA can have negative physiological consequences for calcifying organisms, especia...
Published in: | Frontiers in Marine Science |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Frontiers Media SA
2024
|
Subjects: | |
Online Access: | http://dx.doi.org/10.3389/fmars.2024.1253702 https://www.frontiersin.org/articles/10.3389/fmars.2024.1253702/full |
id |
crfrontiers:10.3389/fmars.2024.1253702 |
---|---|
record_format |
openpolar |
spelling |
crfrontiers:10.3389/fmars.2024.1253702 2024-09-15T18:28:20+00:00 Examining the impacts of elevated, variable pCO2 on larval Pacific razor clams (Siliqua patula) in Alaska Alcantar, Marina W. Hetrick, Jeff Ramsay, Jacqueline Kelley, Amanda L. 2024 http://dx.doi.org/10.3389/fmars.2024.1253702 https://www.frontiersin.org/articles/10.3389/fmars.2024.1253702/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Marine Science volume 11 ISSN 2296-7745 journal-article 2024 crfrontiers https://doi.org/10.3389/fmars.2024.1253702 2024-07-09T04:04:51Z An increase in anthropogenic carbon dioxide is driving oceanic chemical shifts resulting in a long-term global decrease in ocean pH, colloquially termed ocean acidification (OA). Previous studies have demonstrated that OA can have negative physiological consequences for calcifying organisms, especially during early life-history stages. However, much of the previous research has focused on static exposure to future OA conditions, rather than variable exposure to elevated p CO 2 , which is more ecologically relevant for nearshore species. This study examines the effects of OA on embryonic and larval Pacific razor clams ( Siliqua patula ), a bivalve that produces a concretion during early shell development. Larvae were spawned and cultured over 28 days under three p CO 2 treatments: a static high p CO 2 of 867 μatm, a variable, diel p CO 2 of 357 to 867 μatm, and an ambient p CO 2 of 357 μatm. Our results indicate that the calcium carbonate polymorphism of the concretion phase of S. patula was amorphous calcium carbonate which transitioned to vaterite during the advanced D-veliger stage, with a final polymorphic shift to aragonite in adults, suggesting an increased vulnerability to dissolution under OA. However, exposure to elevated p CO 2 appeared to accelerate the transition of larval S. patula from the concretion stage of shell development to complete calcification. There was no significant impact of OA exposure to elevated or variable p CO 2 conditions on S. patula growth or HSP70 and calmodulin gene expression. This is the first experimental study examining the response of a concretion producing bivalve to future predicted OA conditions and has important implications for experimentation on larval mollusks and bivalve management. Article in Journal/Newspaper Ocean acidification Alaska Frontiers (Publisher) Frontiers in Marine Science 11 |
institution |
Open Polar |
collection |
Frontiers (Publisher) |
op_collection_id |
crfrontiers |
language |
unknown |
description |
An increase in anthropogenic carbon dioxide is driving oceanic chemical shifts resulting in a long-term global decrease in ocean pH, colloquially termed ocean acidification (OA). Previous studies have demonstrated that OA can have negative physiological consequences for calcifying organisms, especially during early life-history stages. However, much of the previous research has focused on static exposure to future OA conditions, rather than variable exposure to elevated p CO 2 , which is more ecologically relevant for nearshore species. This study examines the effects of OA on embryonic and larval Pacific razor clams ( Siliqua patula ), a bivalve that produces a concretion during early shell development. Larvae were spawned and cultured over 28 days under three p CO 2 treatments: a static high p CO 2 of 867 μatm, a variable, diel p CO 2 of 357 to 867 μatm, and an ambient p CO 2 of 357 μatm. Our results indicate that the calcium carbonate polymorphism of the concretion phase of S. patula was amorphous calcium carbonate which transitioned to vaterite during the advanced D-veliger stage, with a final polymorphic shift to aragonite in adults, suggesting an increased vulnerability to dissolution under OA. However, exposure to elevated p CO 2 appeared to accelerate the transition of larval S. patula from the concretion stage of shell development to complete calcification. There was no significant impact of OA exposure to elevated or variable p CO 2 conditions on S. patula growth or HSP70 and calmodulin gene expression. This is the first experimental study examining the response of a concretion producing bivalve to future predicted OA conditions and has important implications for experimentation on larval mollusks and bivalve management. |
format |
Article in Journal/Newspaper |
author |
Alcantar, Marina W. Hetrick, Jeff Ramsay, Jacqueline Kelley, Amanda L. |
spellingShingle |
Alcantar, Marina W. Hetrick, Jeff Ramsay, Jacqueline Kelley, Amanda L. Examining the impacts of elevated, variable pCO2 on larval Pacific razor clams (Siliqua patula) in Alaska |
author_facet |
Alcantar, Marina W. Hetrick, Jeff Ramsay, Jacqueline Kelley, Amanda L. |
author_sort |
Alcantar, Marina W. |
title |
Examining the impacts of elevated, variable pCO2 on larval Pacific razor clams (Siliqua patula) in Alaska |
title_short |
Examining the impacts of elevated, variable pCO2 on larval Pacific razor clams (Siliqua patula) in Alaska |
title_full |
Examining the impacts of elevated, variable pCO2 on larval Pacific razor clams (Siliqua patula) in Alaska |
title_fullStr |
Examining the impacts of elevated, variable pCO2 on larval Pacific razor clams (Siliqua patula) in Alaska |
title_full_unstemmed |
Examining the impacts of elevated, variable pCO2 on larval Pacific razor clams (Siliqua patula) in Alaska |
title_sort |
examining the impacts of elevated, variable pco2 on larval pacific razor clams (siliqua patula) in alaska |
publisher |
Frontiers Media SA |
publishDate |
2024 |
url |
http://dx.doi.org/10.3389/fmars.2024.1253702 https://www.frontiersin.org/articles/10.3389/fmars.2024.1253702/full |
genre |
Ocean acidification Alaska |
genre_facet |
Ocean acidification Alaska |
op_source |
Frontiers in Marine Science volume 11 ISSN 2296-7745 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmars.2024.1253702 |
container_title |
Frontiers in Marine Science |
container_volume |
11 |
_version_ |
1810469692426420224 |